9650 Email shows (3items). How do I show a name?

BB 9650
On the email address's, when I have emailed the same person on the same subject more than one time, will show this (3 items) rather than the name. Then I have to click on this to see who was sending me something back. This is not good for me becuase I have too many emails back and forth and need to see who sent them not how many times I have emailed them. Does anyone know the function to stop this?
JH